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  <title>需求</title>

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  <h2 class="title">需求</h2>
  <p class="para">
   In order to use the OpenSSL functions you need to install the <a href="http://www.openssl.org/" class="link external">&raquo;&nbsp;OpenSSL</a> package.
   PHP between versions 4.0.5 and 4.3.1 will work with OpenSSL &gt;= 0.9.5.
   Other versions (PHP &lt;=4.0.4 and &gt;= 4.3.2) require OpenSSL &gt;=
   0.9.6.
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  <div class="warning"><strong class="warning">Warning</strong>
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    You are strongly encouraged to use the most recent OpenSSL version,
    otherwise your web server could be vulnerable to attack.
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